SOLVENT-EXTRACTION OF THORIUM (IV) WITH DIBUTYLDITHIOPHOSPHORIC ACID IN VARIOUS ORGANIC-SOLVENTS

被引：16

作者：

CURTUI, M

HAIDUC, I

机构：

[1] Chemistry Department, Babes-Bolyai University, Cluj-Napoca

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-LETTERS | 1994年 / 186卷 / 03期

关键词：

D O I：

10.1007/BF02162758

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The extraction of thorium(IV) from perchlorate solutions with di-n-butyldithiophosphoric acid (HBudtp) in various organic solvents occurs through an ion exchange mechanism. The extracted species in the organic phase is an eight-coordinate complex Th(Budtp)4. The higher values of the distribution ratio obtained in HBudtp-benzene-water system than in HBudtp-n-butanol-water system are explained by higher solubility of the complex species in nonpolar solvents. The position of the extraction curves in the pH-range lower than 0.7 reduces the complexation of thorium(IV) with Budtp- in the aqueous phase and also the hydrolysis process.

引用

页码：273 / 280

页数：8

共 8 条

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